[Bug rtl-optimization/39196] New: ICE in copyprop_hardreg_forward_1, at regrename.c:1603 during libjava compile

[christophe at saout dot de]

This appeared during compile of the last weekly 4.4.0 snapshot in libjava
compilation:

libtool: compile: 
/var/tmp/portage/sys-devel/gcc-4.4.0_alpha20090215/work/build/./gcc/xgcc
-B/var/tmp/portage/sys-devel/gcc-4.4.0_alpha20090215/work/build/./gcc/
-B/usr/x86_64-pc-linux-gnu/bin/ -B/usr/x86_64-pc-linux-gnu/lib/ -isystem
/usr/x86_64-pc-linux-gnu/include -isystem /usr/x86_64-pc-linux-gnu/sys-include
-DHAVE_CONFIG_H -I.
-I/var/tmp/portage/sys-devel/gcc-4.4.0_alpha20090215/work/gcc-4.4-20090215/libjava/classpath/native/fdlibm
-I../../include -fexceptions -fasynchronous-unwind-tables -g -O2 -march=nocona
-pipe -MT dtoa.lo -MD -MP -MF .deps/dtoa.Tpo -c
/var/tmp/portage/sys-devel/gcc-4.4.0_alpha20090215/work/gcc-4.4-20090215/libjava/classpath/native/fdlibm/dtoa.c
 -fPIC -DPIC -o .libs/dtoa.o
/var/tmp/portage/sys-devel/gcc-4.4.0_alpha20090215/work/gcc-4.4-20090215/libjava/classpath/native/fdlibm/dtoa.c:
In function ‘_Jv_dtoa_r’:
/var/tmp/portage/sys-devel/gcc-4.4.0_alpha20090215/work/gcc-4.4-20090215/libjava/classpath/native/fdlibm/dtoa.c:885:
error: insn does not satisfy its constraints:
(insn 2428 2427 687 103
/var/tmp/portage/sys-devel/gcc-4.4.0_alpha20090215/work/gcc-4.4-20090215/libjava/classpath/native/fdlibm/dtoa.c:536
(set (reg:DF 26 xmm5 [orig:233 D.3242 ] [233])
        (mult:DF (reg:DF 26 xmm5 [orig:233 D.3242 ] [233])
            (reg:DF 0 ax))) 722 {*fop_df_comm_sse} (nil))
/var/tmp/portage/sys-devel/gcc-4.4.0_alpha20090215/work/gcc-4.4-20090215/libjava/classpath/native/fdlibm/dtoa.c:885:
internal compiler error: in copyprop_hardreg_forward_1, at regrename.c:1603
Please submit a full bug report,
with preprocessed source if appropriate.

Reproducible on the preprocessed source using:

/var/tmp/portage/sys-devel/gcc-4.4.0_alpha20090215/work/build/./gcc/xgcc
-B/var/tmp/portage/sys-devel/gcc-4.4.0_alpha20090215/work/build/./gcc/ -o
dtoa.o dtoa.i -O2 -march=nocona


-- 
           Summary: ICE in copyprop_hardreg_forward_1, at regrename.c:1603
                    during libjava compile
           Product: gcc
           Version: 4.4.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: rtl-optimization
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: christophe at saout dot de
 GCC build triplet: x86_64-pc-linux-gnu
  GCC host triplet: x86_64-pc-linux-gnu
GCC target triplet: x86_64-pc-linux-gnu


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=39196